epa07841156 (FILE) - A gas flame behind pipelines in the desert at Khurais oil field, about 160 km from Riyadh, Kingdom of Saudi Arabia, 23 June 2008 (reissued 14 September 2019). According to Saudi state-owned oil company Aramco, two of its oil facilities in Saudi Arabia, Khurais and Abqaiq, were set on fire after allegedly having been targeted by drone attacks. EPA-EFE/ALI HAIDER

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Iran has dismissed US accusations it was behind drone attacks on Saudi Arabia’s oil plants, and warned it is ready for a “full-fledged” war.